DESCRIPTION
The motor generator control ECU (MG ECU), which is built into the inverter with converter assembly, monitors its internal operation and detects malfunctions.
DTC No. | Detection Item | DTC Detection Condition | Trouble Area | MIL | Warning Indicate |
---|---|---|---|---|---|
P1C641F | Generator Control Module Circuit Intermittent | Excitation signal (REF signal) for resolver angle detection cycle malfunction detected when DTC P0C7917, P0D3319, P0E5717, P1C5D19 or P1C5F19 is stored. (1 trip detection logic) |
| Does not come on | Master Warning Light: Does not come on |
P1CAC49 | Generator Position Sensor Internal Electronic Failure | Generator resolver angle malfunction: The difference between the resolver angle for control and estimated resolver angle exceeds the allowable limit. (1 trip detection logic) |
| Comes on | Master Warning Light: Comes on |
P1CAF38 | Generator Position Sensor REF Signal Cycle Malfunction Signal Frequency Incorrect | Resolver REF signal cycle malfunction: Excitation signal (REF signal) for resolver angle detection cycle malfunction (1 trip detection logic) |
| Comes on | Master Warning Light: Comes on |
DTC No. | Data List |
---|---|
P1CAC49 | Generator Revolution |
P1CAF28 |
MONITOR DESCRIPTION
The motor generator control ECU performs diagnostic tests to verify proper operation of internal ECU systems. In this diagnostic monitor, the motor generator control ECU checks for an R/D (Resolver/Digital Converter) malfunction involving the generator resolver. If motor generator control ECU detects an R/D error, it will conclude that there is an internal malfunction involving the generator resolver. The motor generator control ECU will illuminate the MIL and set a DTC.
MONITOR STRATEGY
Related DTCs | P1CAC (INF P1CAC49): Generator Control Module R/D Processing (Generator Position) Performance P1CAF (INF P1CAF38): Generator Position Sensor Reference Signal Performance |
Required sensors/components | Generator resolver |
Frequency of operation | Continuous |
Duration | TMC's intellectual property |
MIL operation | Immediately |
Sequence of operation | None |
TYPICAL ENABLING CONDITIONS
The monitor will run whenever the following DTCs are not stored | TMC's intellectual property |
Other conditions belong to TMC's intellectual property | - |
TYPICAL MALFUNCTION THRESHOLDS
TMC's intellectual property | - |
COMPONENT OPERATING RANGE
Motor generator control ECU | DTC P1CAC (INF P1CAC49) is not detected DTC P1CAF (INF P1CAF38) is not detected |
CONFIRMATION DRIVING PATTERN
HINT:
Click here
Click here
*: Lightly wiggle the connectors and wire harnesses up and down and right and left.
HINT:
[*1] to [*6]: Normal judgment procedure.
The normal judgment procedure is used to complete DTC judgment and also used when clearing permanent DTCs.
HINT:
WIRING DIAGRAM
CAUTION / NOTICE / HINT
CAUTION:
Click here
HINT:
Waiting for at least 10 minutes is required to discharge the high-voltage capacitor inside the inverter with converter assembly.
*a | Without waiting for 10 minutes |
NOTICE:
After turning the power switch off, waiting time may be required before disconnecting the cable from the negative (-) auxiliary battery terminal. Therefore, make sure to read the disconnecting the cable from the negative (-) auxiliary battery terminal notices before proceeding with work.
Click here
HINT:
PROCEDURE
1. | CHECK DTC OUTPUT (MOTOR GENERATOR CONTROL) |
(a) Connect the Techstream to the DLC3.
(b) Turn the power switch on (IG).
(c) Enter the following menus: Powertrain / Motor Generator / Trouble Codes.
(d) Check for DTCs.
Powertrain > Motor Generator > Trouble Codes Result | Proceed to |
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P1CAC49, P1CAF38 or P1C641F only is output, or DTCs except the ones in the table below are also output. | A |
Any of the following DTCs are also output. | B |
Relevant DTC | |
---|---|
P0A3F16 | Drive Motor "A" Position Sensor Circuit Voltage Below Threshold |
P0A4B16 | Generator Position Sensor Circuit Voltage Below Threshold |
P0C6413 | Generator Position Sensor Circuit "A" Circuit Open |
P0C6416 | Generator Position Sensor Circuit "A" Circuit Voltage Below Threshold |
P0C6417 | Generator Position Sensor Circuit "A" Circuit Voltage Above Threshold |
P0C6913 | Generator Position Sensor Circuit "B" Circuit Open |
P0C6916 | Generator Position Sensor Circuit "B" Circuit Voltage Below Threshold |
P0C6917 | Generator Position Sensor Circuit "B" Circuit Voltage Above Threshold |
(e) Turn the power switch off.
B | GO TO DTC CHART (MOTOR GENERATOR CONTROL SYSTEM) |
|
2. | CHECK CONNECTOR CONNECTION CONDITION (INVERTER WITH CONVERTER ASSEMBLY CONNECTOR) |
Click here
Result | Proceed to |
---|---|
OK | A |
NG (The connector is not connected securely.) | B |
NG (The terminals are not making secure contact or are deformed, or water or foreign matter exists in the connector.) | C |
B | CONNECT SECURELY |
C | REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
3. | CHECK GENERATOR RESOLVER CIRCUIT |
Click here
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4. | CHECK MOTOR RESOLVER CIRCUIT |
Click here
HINT:
If the "Motor Resolver Circuit" inspection results are normal, perform the next step.
NEXT | REFER TO REPLACE INVERTER WITH CONVERTER ASSEMBLY PARTS |